Polyester fleece 120 g/m² – Roll 0.35 × 50 m – Reinforcing fleece for roof waterproofing

Extra strong reinforcing fleece for long-lasting liquid waterproofing – tested, tear-resistant, durable.

The Polyester fleece 120 g/m² in 35 cm roll width is a high-performance reinforcing and specialty fleece made of 99 % polyester, developed for demanding detail sealing on flat roofs where a larger reinforcement zone is required.

With a certified Tensile strength of up to 12.6 kN/m (DIN EN ISO 10319 – SGS test report no. QDIN2411002250PL01_EN) this extra strong fleece offers high resistance to mechanical stresses, movements of the substrate and temperature changes.

Thanks to the microperforated structure This ensures uniform penetration with sealing materials, resulting in a homogeneous and permanently reliable seal.
Additionally, the fleece sewn with polyester threads, which further increases the tear resistance.

Compared to narrower roll widths (15 cm and 25 cm), the 35 cm variant offers a significantly larger coverage, which makes them particularly suitable for Roof drains, fans, aerators and other complex connection points might.

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Characteristics

• Extra strong – for demanding detailed sealing applications
• Microperforated – optimal penetration with sealing material
• Additional reinforcement through sewn polyester threads
• Elastic and flexible – ideal for corners, curves and connections
• Water-repellent and durable
• High tensile strength up to 12.6 kN/m (tested according to DIN EN ISO 10319)

Applications

• Waterproofing of Roof drains and gullies
• Reinforcement of Aerators, fans and penetrations
• Inside and outside corners with large reinforcement zone
• Transitions between roof surface and upstand
• Parapets and attics with increased load
• Detailed sealing work on balconies and terraces
• Refurbishment of heavily stressed connection areas

Technical data

• Material: 99 % Polyester (PES)
• GSM: 120 g/m²
• Tensile strength: up to 12.6 kN/m
• Standard: DIN EN ISO 10319 (SGS certified)
• Roll size: 0.35 × 50 m
• Colour: white
• Application: Reinforcement of liquid waterproofing membranes
• Substrate: bitumen, PU, PMMA, liquid waterproofing

Practical examples

• Sealing roof drains with liquid plastic
• Armoring of fans and aerators
• Rehabilitation of heavily stressed connection points
• Sealing of complex detail areas on flat roofs

Instructions for use

• Thoroughly clean the surface and ensure it is dry and load-bearing.
• Place polyester fleece into the fresh sealant and saturate it completely.
• Tracks overlap by 5–10 cm
• Carefully incorporate connections, penetrations, and transitions.

What width is suitable for my project?

• 15 cm roll width – ideal for transitions, internal and external corners, pipe penetrations and precise detail work.

• 25 cm roll width – ideal for larger connections, parapets and transitions with increased safety margin

• 35 cm roll width – ideal for roof drains, gullies, fans, aerators and heavily stressed connection areas (current selection)

• 50 cm roll width – Ideal for full-surface reinforcement of flat roofs, terraces, and usable roof areas. When applied over a large area, cracks, transitions, and detail areas are automatically reinforced.

Frequently Asked Questions (FAQ)

Why is the 35 cm roll width particularly suitable for roof drains and penetrations?
✅ The greater width allows for a generous reinforcement zone around critical components, which better distributes stresses and prevents leaks.

Should I choose 35 cm instead of 25 cm?
✅ The 35 cm roll width is recommended when larger coverages are required or complex details such as drains and fans need to be sealed.

Is the fleece compatible with PU and liquid plastics?
✅ Yes, it is compatible with bitumen, PU and liquid plastic systems.

Do I need to cut the fleece?
✅ Yes, it can easily be cut to size with scissors or a cutter.

How wide should the overlap be?
✅ An overlap of 5–10 cm.

Is the product UV-resistant?
✅ The fleece is intended for use within waterproofing systems. It should be covered in case of direct UV exposure.

Can polyester fleece be used in sub-zero temperatures?
✅ Yes, the fleece itself can be used without any problems in sub-zero temperatures. It is important that the waterproofing material used (e.g. PU liquid waterproofing or bitumen) is also approved for low temperatures. In combination with frost-resistant materials, the fleece will function reliably even in winter.

How should the polyester fleece be stored?
✅ Store the fleece in a dry place, protected from direct sunlight and UV light. A covered, well-ventilated room is ideal. This will ensure the roll retains its shape and remains easy to work with.

How long does the polyester fleece last in a sealant?
✅ When installed correctly, the fleece ensures a durable and reliable seal. It reinforces the coating, distributes stress evenly, and prevents cracking – thus significantly extending the service life of the waterproofing system.

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✅ The 35 cm roll width is the right choice for complex detail sealing and more heavily stressed connection areas.
It is particularly suitable for roof drains, gullies, vents, penetrations and transitions with increased mechanical stress.

The greater width provides additional safety, while still allowing for good control during processing.
Professional material quality that can be safely processed by both experienced DIY enthusiasts and specialist companies.